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Sitesy Site Check
x402
Sitesy Site Check is a paid API for AI agents from api.sitesy.ca, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).
Checks a domain for HTTPS reachability, HTTP behavior, SSL certificate days remaining, and presence of key security headers
Price / call$0.001
Success—
StatusUnknown
How this service works
Quick site check: HTTPS reachability, HTTP behaviour, certificate days remaining, and security header presence
Output
Returns HTTPS reachability status, HTTP response behavior (e.g. redirects, status codes), the number of days remaining on the SSL/TLS certificate, and which security headers (such as HSTS, CSP, X-Frame-Options) are present or absent for the given domain.
Example use cases
Pre-launch security audit
“Before we go live, can you check shopnewbrand.com to confirm HTTPS is reachable, the SSL cert has plenty of days left, and the security headers are properly set?”
Certificate expiry monitoring
“I want to know how many days are left on the SSL certificate for clientsite.io — can you run a site check and flag if it's close to expiring?”
Vendor security verification
“Can you check partnerdomain.com to see if they're running HTTPS correctly and have security headers like HSTS enabled? I need to assess their basic security posture.”
Technical details
Endpoint
GEThttps://api.sitesy.ca/v1/site-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, lightweight check of a single domain's HTTPS health, SSL certificate expiry, and security header presence — ideal for pre-launch audits, vendor assessments, or certificate monitoring workflows. Prefer it over a full website intelligence report when you only need security-oriented surface checks rather than deep content or DNS analysis.
Side effects
- Domain does not exist or cannot be resolved — returns unreachable or DNS failure
- Domain is reachable over HTTP but not HTTPS — certificate data may be absent
- Invalid or malformed domain input — validation error returned
- Request timeout if target server is slow or unresponsive
- Self-signed or expired certificate may result in connection errors rather than cert details
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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